import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';

class ChineseCupertinoLocallizations implements CupertinoLocalizations {
  static const List<String> _shortWeekdays = <String>[
    '周一',
    '周二',
    '周三',
    '周四',
    '周五',
    '周六',
    '周日',
  ];

  static const List<String> _shortMonths = <String>[
    '1月',
    '2月',
    '3月',
    '4月',
    '5月',
    '6月',
    '7月',
    '8月',
    '9月',
    '10月',
    '11月',
    '12月',
  ];

  static const List<String> _months = <String>[
    '1月',
    '2月',
    '3月',
    '4月',
    '5月',
    '6月',
    '7月',
    '8月',
    '9月',
    '10月',
    '11月',
    '12月',
  ];


  @override
  String datePickerYear(int yearIndex) => yearIndex.toString()+"年";

  @override
  String datePickerMonth(int monthIndex) => _months[monthIndex - 1];

  @override
  String datePickerDayOfMonth(int dayIndex) => dayIndex.toString()+"日";

  @override
  String datePickerHour(int hour) => hour.toString();

  @override
  String datePickerHourSemanticsLabel(int hour) => hour.toString() + " 小时";

  @override
  String datePickerMinute(int minute) => minute.toString().padLeft(2, '0');

  @override
  String datePickerMinuteSemanticsLabel(int minute) {
    if (minute == 1)
      return '1 分钟';
    return minute.toString() + ' 分钟';
  }

  @override
  String datePickerMediumDate(DateTime date) {
    return '${_shortWeekdays[date.weekday - DateTime.monday]} '
      '${_shortMonths[date.month - DateTime.january]} '
      '${date.day.toString().padRight(2)}';
  }

  @override
  DatePickerDateOrder get datePickerDateOrder => DatePickerDateOrder.ymd;

  @override
  DatePickerDateTimeOrder get datePickerDateTimeOrder => DatePickerDateTimeOrder.date_time_dayPeriod;

  @override
  String get anteMeridiemAbbreviation => '上午';

  @override
  String get postMeridiemAbbreviation => '下午';

  @override
  String get todayLabel => '今日';

  @override
  String get alertDialogLabel => '提示';

  @override
  String timerPickerHour(int hour) => hour.toString();

  @override
  String timerPickerMinute(int minute) => minute.toString();

  @override
  String timerPickerSecond(int second) => second.toString();

  @override
  String timerPickerHourLabel(int hour) =>  '时';

  @override
  String timerPickerMinuteLabel(int minute) => '分';

  @override
  String timerPickerSecondLabel(int second) => '秒';

  @override
  String get cutButtonLabel => '剪切';

  @override
  String get copyButtonLabel => '复制';

  @override
  String get pasteButtonLabel => '粘贴';

  @override
  String get selectAllButtonLabel => '全选';

  /// Creates an object that provides US English resource values for the
  /// cupertino library widgets.
  ///
  /// The [locale] parameter is ignored.
  ///
  /// This method is typically used to create a [LocalizationsDelegate].
  static Future<CupertinoLocalizations> load(Locale locale) {
    return SynchronousFuture<CupertinoLocalizations>(ChineseCupertinoLocallizations());
  }

  /// A [LocalizationsDelegate] that uses [DefaultCupertinoLocalizations.load]
  /// to create an instance of this class.
  static const LocalizationsDelegate<CupertinoLocalizations> delegate = _ChineseCupertinoLocalizationsDelegate();
}

class _ChineseCupertinoLocalizationsDelegate extends LocalizationsDelegate<CupertinoLocalizations> {
  const _ChineseCupertinoLocalizationsDelegate();

  @override
  bool isSupported(Locale locale) => ['zh', 'en'].contains(locale.languageCode);

  @override
  Future<CupertinoLocalizations> load(Locale locale) => ChineseCupertinoLocallizations.load(locale);

  @override
  bool shouldReload(_ChineseCupertinoLocalizationsDelegate old) => false;

  @override
  String toString() => 'DefaultCupertinoLocalizations.delegate(zh_CN)';
}